1978 – 1984
Born in Istanbul on 27.12.1978. Spent the first few childhood years in L.A / California; learning Turkish and English simultaneously.
1984 – 1989
Came back to Istanbul and went to Sisli Terakki Elementary School. Started to program the Amstrad CPC 464 computer at home. Wrote my first hangman game on the last year of the school.
1989 – 1996
Went to Cagaloglu Anadolu Lisesi, where my study continued in German. Started to play keyboard and guitar. Became part of the school band. Spent a few years in swimming & martial arts.
1996 – 2002
Pursued German undergraduate studies at the Marmara University on business administration.
Initiated white hat hacking adventures. Wrote cheat / savegame editor apps for many games; including Diablo, Icewind Dale, Jedi Knight, Worms World Party. Developed a couple of intrusion detection programs. Hacked into my Nokia & Siemens cellphones to send personalized bulk SMS messages.
Trojan Detective, my trojan detecting IP scanner, was published by PC Magazine. Started to write security related articles for them under the nickname “WhiteSaint”. Continued my tech articles at Windows .NET Magazine.
Became a founding member of the Bluesaint Band, which played countless shows for the following 10 years. Became house band of the TV show “Joy Inn” by (late) Defne Joy Foster.
Met Vic Sagerquist in a chat room, who happened to be a Hollywood music producer. Learned a lot from him on computer aided music production. Won a couple of awards on online music contests.
Self-published my first book Bir Romeo Bir Juliet, which was co-authored with Gamze Güçkıran.
After my part-time webmaster job at Escort Computer, I started working for E-Fikir as the web team leader.
2002 – 2005
Pursued my German graduate studies at Marmara University on MIS.
Joined Cozumevi, where I worked as the software development manager and eventually became a partner.
Went back to martial arts for a while, and started playing Go.
Published my first tech book Programcilik Mantigi.
2005 – 2011
Pursued my doctorate studies at Yeditepe University on Organizational Behavior.
Published two further tech books: Bilgisayar Destekli Muzik and Veritabani Mantigi.
Composed jingles for Haber Turk, Number One TV and Business Channel. After playing on the opening act for The Blues Brothers with BlueSaint, I left the band and declared the bass guitar to be my main instrument. I participated the bands Bate Bumbo, Jozi Levi Brazil Project, Urban Cats and Afrotolia.
Kept my white hacking hat on in the corporate world; which enabled me to embed my own ActiveX controls into SAP GUI, printing barcodes directly from SmartForms, deciphering steelyard protocols and embedding SAP reports into IPTV broadcasts.
2011 – 2012
2012 – 2014
Came back to Turkey and started to work as a freelance SAP software architect under the brand Tesuji Consulting.
Finished my PhD thesis and became Dr. Kerem Koseoglu.
Abdi Ibrahim‘s “RAISE” project, which I participated as the lead software architect, earned a silver medal in SAP Quality Awards 2013.
Published the book Ne Kadar Hayvansin.
Started with my improv theater and yoga studies.
2014 – 2016
Became one of the founding members of the improv theater group “Organik Oyuncular” and did lots of shows.
Became the bass player of The Flat Band and played bass guitar for Phil Keegan’s album.
2016 – *
My first English book Design Patterns in ABAP Objects was globally published by SAP Press.
Eczacibasi‘s “Harmony” project, which I participated as the lead software architect, earned many awards; including: Gold medal at SAP Quality Awards 2016, CIO 2016 award, EMEA finalist in SAP Global Quality Awards 2016, CIO 2017 USA award.
Became an official Fodera artist. Performed with Kenan Doğulu for his jazzy project “Ihtimaller”. Became one of the founding members of the shamanic improvisation band Shamoon and published the album Merkabah.
Gave yoga lessons to Eczacibasi employees.
Joined the Peloton4 alliance to share & spread knowledge.